The thermal vent communities occur at depth of 800 to 1000 m where sea floor permit seawater to percolate deeply inside the crust and to react with the hot core material. The vent community of bacteria like Thermotoga, Begiatoa, Thiomicrospira and additional sulphide or sulphur oxidisers of various types. The archaeobacteria that may be growing are Thermococcus litoralis, Archaeoglobus pyrodictium and Pyrobaculum.

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